Here are 10 One-Word Answer Type Questions from the topic Sexual Reproduction (Class 7 Science – Chapter: Reproduction in Plants) with their answers and explanations along with the question:
1.
Question:
The process of fusion of male and female gametes is called ___________.
Answer: Fertilisation
Explanation:
In sexual reproduction, the male gamete present in the pollen grain fuses with the female gamete present in the ovule. This process is called fertilisation and results in the formation of a zygote.
2.
Question:
The reproductive part of a plant is the ___________.
Answer: Flower
Explanation:
In sexual reproduction of plants, the flower is the reproductive part. It contains male reproductive parts (stamens) and female reproductive parts (pistil) which help in the production of seeds.
3.
Question:
The male gametes are found in ___________.
Answer: Pollen grains
Explanation:
In flowers, pollen grains are present in the anther of the stamen. These pollen grains carry the male gametes needed for fertilisation.
4.
Question:
The female gametes are found in ___________.
Answer: Ovule
Explanation:
The ovule is present inside the ovary of the pistil. It contains the female gamete which fuses with the male gamete during fertilisation.
5.
Question:
A flower which has both male and female reproductive parts is called ___________.
Answer: Bisexual
Explanation:
A bisexual flower has both stamens (male part) and pistil (female part) in the same flower. Example: Mustard, Rose.
6.
Question:
Transfer of pollen grains from anther to stigma is called ___________.
Answer: Pollination
Explanation:
Pollination is essential in sexual reproduction as it helps in bringing the male gamete (pollen grain) to the female part (stigma) for fertilisation.
7.
Question:
Pollination carried out between flowers of the same plant is called ___________.
Answer: Self-pollination
Explanation:
When pollen grains from the anther are transferred to the stigma of the same flower or another flower of the same plant, it is called self-pollination.
8.
Question:
Pollination that occurs between flowers of different plants of the same kind is called ___________.
Answer: Cross-pollination
Explanation:
In cross-pollination, pollen grains are transferred from the flower of one plant to the flower of another plant of the same species. It increases genetic variety.
9.
Question:
The fertilised egg formed after fertilisation is called ___________.
Answer: Zygote
Explanation:
When male and female gametes fuse, they form a single cell called zygote. This zygote develops into an embryo.
10.
Question:
The zygote develops into ___________.
Answer: Embryo
Explanation:
After fertilisation, the zygote divides and develops into an embryo which is present inside the seed and grows into a new plant.
If you want, I can prepare this in a PDF Worksheet format too.
Shall I?
